/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.action.admin.cluster.node.tasks.list;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.tasks.TaskInfo;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
/**
* Information about a currently running task and all its subtasks.
*/
public class TaskGroup implements ToXContent {
private final TaskInfo task;
private final List<TaskGroup> childTasks;
public TaskGroup(TaskInfo task, List<TaskGroup> childTasks) {
this.task = task;
this.childTasks = Collections.unmodifiableList(new ArrayList<>(childTasks));
}
public static Builder builder(TaskInfo taskInfo) {
return new Builder(taskInfo);
}
public static class Builder {
private TaskInfo taskInfo;
private List<Builder> childTasks;
private Builder(TaskInfo taskInfo) {
this.taskInfo = taskInfo;
childTasks = new ArrayList<>();
}
public void addGroup(Builder builder) {
childTasks.add(builder);
}
public TaskInfo getTaskInfo() {
return taskInfo;
}
public TaskGroup build() {
return new TaskGroup(taskInfo, childTasks.stream().map(Builder::build).collect(Collectors.toList()));
}
}
public TaskInfo getTaskInfo() {
return task;
}
public List<TaskGroup> getChildTasks() {
return childTasks;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
task.toXContent(builder, params);
if (childTasks.isEmpty() == false) {
builder.startArray("children");
for (TaskGroup taskGroup : childTasks) {
taskGroup.toXContent(builder, params);
}
builder.endArray();
}
return builder.endObject();
}
}